Need help about PlayFab

Hi folks. I'm having trouble with playfab. I hope there is experienced developer about playfab who can help me. I have managed to integrate my game with playfab's kongregate add-on. SetUserData working perfectly fine. I can see Player Data in my Game Manager. However when I paste GetUserData codes, PlayFabId = PlayFabId, give me an error on code. As in the KongregateHandler script, I change it to KongregateId = kongregateId, still give me an error on code. So how I get my saved player data? Here is my codes;

        public void SetUserData()
     {
     PlayFabClientAPI.UpdateUserData(new UpdateUserDataRequest()
     {
     Data = new Dictionary<string, string>() {
     
             { "damage", karakter.damage.ToString() },
             { "damageMultiply", karakter.damageMultiply.ToString() },
             { "karakterStartHp", karakter.karakterStartHp.ToString() },
             { "healthMultiply", karakter.healthMultiply.ToString() },
             { "EnemyAliveBonus", karakter.EnemyAliveBonus.ToString() },
             { "critChance", karakter.critChance.ToString() },
             { "critMultiply", karakter.critMultiply.ToString() },
             { "fireRate", karakter.fireRate.ToString() },
             { "range", karakter.range.ToString() },
                                }
         },
         result => Debug.Log("Successfully updated user data"),
         error => {
             Debug.Log("Got error setting user data Ancestor to Arthur");
             Debug.Log(error.GenerateErrorReport());
         });
     }
     
         public void GetUserData()
     {
         PlayFabClientAPI.GetUserData(new GetUserDataRequest()
         {
             PlayFabId = PlayFabId,  ------>Getting error here---
             Keys = null
         }, result => {
             Debug.Log("Got user data:");
             if (result.Data == null || !result.Data.ContainsKey("damage")) Debug.Log("No damage");
             else Debug.Log("damage: " + result.Data["damage"].Value);
         }, (error) => {
             Debug.Log("Got error retrieving user data:");
             Debug.Log(error.GenerateErrorReport());
         });
     }